EP 1221581 A1 20020710 - Interferometer
Title (en)
Interferometer
Title (de)
Interferometer
Title (fr)
Interféromètre
Publication
Application
Priority
EP 01100027 A 20010104
Abstract (en)
The present invention relates to an interferometer comprising: at least one multimode waveguide (1), light or matter beam input means (2) for inputting a primary beam ILB under a specified primary angle alpha into the multimode waveguide (1) so as to generate an interference between two or more populated high modes of the multimode waveguide (1), and at least one light or matter beam processing means (8) for processing one or more secondary light or matter beams OLB1,OLB2 exiting the multimode waveguide (1). This waveguide interferometer can be used as a fine ruler for the precision positioning of different objects. The non-uniform structure of the fringes allows precisely to determine the absolute distance d between the mirrors M1 and M2 used as a preferred waveguide (1) of the interferometer. In case the waveguide (1) is made of an active optical material, the interferometer can be used as a switch to switch the light between the two different output channels. <IMAGE>
IPC 1-7
IPC 8 full level
G01B 9/02 (2006.01); G01J 9/02 (2006.01); G02B 6/032 (2006.01); G02B 6/12 (2006.01); G02B 6/34 (2006.01)
CPC (source: EP US)
G01J 9/02 (2013.01 - EP US); G02B 6/032 (2013.01 - EP US); G02B 6/12007 (2013.01 - EP US); G02B 6/29358 (2013.01 - EP US); G02B 6/29395 (2013.01 - EP US); G02B 6/4246 (2013.01 - EP US); G02B 2006/1204 (2013.01 - EP US); G02B 2006/12159 (2013.01 - EP US)
Citation (search report)
- [Y] US 4504121 A 19850312 - CARLSEN W JOHN [US], et al
- [X] US 4381137 A 19830426 - BERG DAVID M, et al
- [XAY] ECKERLE M ET AL: "Experimental mode coupling analysis in optical waveguides for sensor and component optimization", OPTICS AND LASER TECHNOLOGY,NL,ELSEVIER SCIENCE PUBLISHERS BV., AMSTERDAM, vol. 28, no. 5, 1 July 1996 (1996-07-01), pages 373 - 380, XP004026266, ISSN: 0030-3992
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1221581 A1 20020710; US 2002159068 A1 20021031; US 6657730 B2 20031202
DOCDB simple family (application)
EP 01100027 A 20010104; US 3873602 A 20020103